ISO/IEC 17025 accredited master hardness test blocks for Brinell scales — ILAC-MRA, ASTM-compliant certificate plus ISO certificate. Mirror surface.
Certified master hardness reference test blocks for Brinell scales, calibrated by an ISO/IEC 17025 accredited laboratory (ANAB, AC 3026.01) and covered by the ILAC-MRA. Each block is supplied with a calibration certificate compliant with ASTM standards and includes an additional ISO certificate. Mirror-finished test surface.
- Dimensions: Ø 90 × 17 mm or Ø 60 × 10 mm (depending on the scale)
- Weight: 0.8 kg or 0.2 kg (depending on the scale)
- Certification: ISO/IEC 17025 (ANAB, AC 3026.01), ILAC-MRA, ASTM-compliant certificate plus ISO certificate
Select the hardness scale and range from the options. Scales marked “(made to order)” are produced on demand with a delivery time of approximately 30 days.
Prices are ex-works; shipping is charged separately. Payment by bank transfer at the time of ordering.
Learn more about our certified hardness test blocks
Learn more about the method: Brinell hardness testing guide · Brinell test theory (ASTM E10 / ISO 6506)
Frequently Asked Questions
Which Brinell scales are covered by these test blocks?
Thirteen Brinell scales from HBW 10/3000 down to HBW 2.5/31.25, including HBW 10/1500, 10/1000, 10/500, 10/250, 10/100, 5/750, 5/250, 5/125, 5/62.5, 2.5/187.5 and 2.5/62.5, each in certified hardness ranges.
What are the dimensions and weight of a Brinell test block?
Blocks for HBW 10/3000, 10/1500, 10/1000, 10/500, 5/750 and 2.5/187.5 measure Ø 90 × 17 mm and weigh 0.8 kg. Blocks for the other scales measure Ø 60 × 10 mm and weigh 0.2 kg. All have mirror-finished surfaces.
What certificates are included with each hardness test block?
Every block is calibrated by an ISO/IEC 17025 accredited laboratory (ANAB, AC 3026.01) and the calibration is covered by the ILAC-MRA. The certificate complies with ASTM standards and an additional ISO certificate is included.
How do I order the correct test block?
Select the hardness scale and then the hardness range you need from the drop-down menu. Each option corresponds to one certified master reference block within that range.
What are the delivery and payment terms?
Prices are ex-works and shipping is charged separately. Payment is made by bank transfer at the time of ordering. Scales marked as made to order are produced on demand with a delivery time of approximately 30 days.





